VisualStyleRenderer 클래스
정의
중요
일부 정보는 릴리스되기 전에 상당 부분 수정될 수 있는 시험판 제품과 관련이 있습니다. Microsoft는 여기에 제공된 정보에 대해 어떠한 명시적이거나 묵시적인 보증도 하지 않습니다.
VisualStyleElement를 그리고 관련 정보를 가져오는 메서드를 제공합니다. 이 클래스는 상속될 수 없습니다.
public ref class VisualStyleRenderer sealedpublic sealed class VisualStyleRenderertype VisualStyleRenderer = classPublic NotInheritable Class VisualStyleRenderer- 상속
-
VisualStyleRenderer
예제
다음 코드 예제에서는 클래스를 VisualStyleRenderer 사용 하 여 제목 표시줄로 끌기, 크기 조정 핸들을 사용 하 여 크기 조정 및 닫기를 포함 하 여 창의 기본 UI 중 일부를 시뮬레이션 하는 사용자 지정 컨트롤을 구현 합니다. 이 예제에서는 창에 의해 VisualStyleElement.Window.CloseButtonVisualStyleElement.Window.Caption노출되는 요소 및 VisualStyleElement.Status.Gripper 클래스를 포함하여 창의 표준 부분을 나타내는 여러 VisualStyleElement 개체를 사용합니다.
#using <System.Drawing.dll>
#using <System.Windows.Forms.dll>
#using <System.dll>
using namespace System;
using namespace System::Text;
using namespace System::Drawing;
using namespace System::Drawing::Drawing2D;
using namespace System::Collections::Generic;
using namespace System::Windows::Forms;
using namespace System::Windows::Forms::VisualStyles;
namespace VisualStyleRendererSample
{
public ref class WindowSimulation : public Control
{
private:
Dictionary<String^, VisualStyleElement^>^ windowElements;
Dictionary<String^, Rectangle>^ elementRectangles;
VisualStyleRenderer^ renderer;
Point closeButtonOffset;
System::Drawing::Size gripperSize;
System::Drawing::Size closeButtonSize;
bool isResizing;
bool isMoving;
bool isClosing;
int captionHeight;
int frameThickness;
int statusHeight;
Point originalClick;
Point resizeOffset;
public:
WindowSimulation() : Control()
{
statusHeight = 22;
windowElements = gcnew Dictionary<String^, VisualStyleElement^>();
elementRectangles = gcnew Dictionary<String^, Rectangle>();
this->Location = Point(50, 50);
this->Size = System::Drawing::Size(350, 300);
this->BackColor = Color::Azure;
this->DoubleBuffered = true;
this->MinimumSize = System::Drawing::Size(300, 200);
this->Font = SystemFonts::CaptionFont;
this->Text = "Simulated Window";
// Insert the VisualStyleElement objects into the Dictionary.
windowElements->Add("windowCaption",
VisualStyleElement::Window::Caption::Active);
windowElements->Add("windowBottom",
VisualStyleElement::Window::FrameBottom::Active);
windowElements->Add("windowLeft",
VisualStyleElement::Window::FrameLeft::Active);
windowElements->Add("windowRight",
VisualStyleElement::Window::FrameRight::Active);
windowElements->Add("windowClose",
VisualStyleElement::Window::CloseButton::Normal);
windowElements->Add("statusBar",
VisualStyleElement::Status::Bar::Normal);
windowElements->Add("statusGripper",
VisualStyleElement::Status::Gripper::Normal);
// Get the sizes and location offsets for the window parts
// as specified by the visual style, and then use this
// information to calcualate the rectangles for each part.
GetPartDetails();
CalculateRectangles();
this->MouseDown +=
gcnew MouseEventHandler(this,
&WindowSimulation::ImitationWindow_MouseDown);
this->MouseUp +=
gcnew MouseEventHandler(this,
&WindowSimulation::ImitationWindow_MouseUp);
this->MouseMove +=
gcnew MouseEventHandler(this,
&WindowSimulation::ImitationWindow_MouseMove);
}
// Get the sizes and offsets for the window parts as specified
// by the visual style.
private:
void GetPartDetails()
{
// Do nothing further if visual styles are not enabled.
if (!Application::RenderWithVisualStyles)
{
return;
}
Graphics^ g = this->CreateGraphics();
// Get the size and offset of the close button.
if (SetRenderer(windowElements["windowClose"]))
{
closeButtonSize =
renderer->GetPartSize(g, ThemeSizeType::True);
closeButtonOffset =
renderer->GetPoint(PointProperty::Offset);
}
// Get the height of the window caption.
if (SetRenderer(windowElements["windowCaption"]))
{
captionHeight = renderer->GetPartSize(g,
ThemeSizeType::True).Height;
}
// Get the thickness of the left, bottom,
// and right window frame.
if (SetRenderer(windowElements["windowLeft"]))
{
frameThickness = renderer->GetPartSize(g,
ThemeSizeType::True).Width;
}
// Get the size of the resizing gripper.
if (SetRenderer(windowElements["statusGripper"]))
{
gripperSize = renderer->GetPartSize(g,
ThemeSizeType::True);
}
}
// Use the part metrics to determine the current size
// of the rectangles for all of the window parts.
private:
void CalculateRectangles()
{
int heightMinusFrame =
ClientRectangle.Height - frameThickness;
// Calculate the window frame rectangles and add them
// to the Dictionary of rectangles.
elementRectangles["windowCaption"] = Rectangle(0, 0,
ClientRectangle.Width, captionHeight);
elementRectangles["windowBottom"] = Rectangle(0,
heightMinusFrame, ClientRectangle.Width, frameThickness);
elementRectangles["windowLeft"] = Rectangle(0, captionHeight,
frameThickness, heightMinusFrame - captionHeight);
elementRectangles["windowRight"] = Rectangle(
ClientRectangle.Width - frameThickness, captionHeight,
frameThickness, heightMinusFrame - captionHeight);
// Calculate the window button rectangle and add it
// to the Dictionary of rectangles.
elementRectangles["windowClose"] =
Rectangle(ClientRectangle.Right +
closeButtonOffset.X - closeButtonSize.Width - frameThickness, closeButtonOffset.Y,
closeButtonSize.Width, closeButtonSize.Height);
// Calculate the status bar rectangles and add them
// to the Dictionary of rectangles.
elementRectangles["statusBar"] =
Rectangle(frameThickness,
heightMinusFrame - statusHeight,
ClientRectangle.Width - (2 * frameThickness),
statusHeight);
elementRectangles["statusGripper"] =
Rectangle(ClientRectangle.Right -
gripperSize.Width - frameThickness,
heightMinusFrame - gripperSize.Height,
gripperSize.Width, gripperSize.Height);
}
protected:
virtual void OnPaint(PaintEventArgs^ e) override
{
__super::OnPaint(e);
// Ensure that visual styles are supported.
if (!Application::RenderWithVisualStyles)
{
this->Text = "Visual styles are not enabled.";
TextRenderer::DrawText(e->Graphics, this->Text,
this->Font, this->Location, this->ForeColor);
return;
}
// Set the clip region to define the curved corners
// of the caption.
SetClipRegion();
// Draw each part of the window.
for each(KeyValuePair<String^, VisualStyleElement^>^ entry
in windowElements)
{
if (SetRenderer(entry->Value))
{
renderer->DrawBackground(e->Graphics,
elementRectangles[entry->Key]);
}
}
// Draw the caption text.
TextRenderer::DrawText(e->Graphics, this->Text, this->Font,
elementRectangles["windowCaption"], Color::White,
TextFormatFlags::VerticalCenter |
TextFormatFlags::HorizontalCenter);
}
private:
// Initiate dragging, resizing, or closing the imitation window.
void ImitationWindow_MouseDown(Object^ sender, MouseEventArgs^ e)
{
// The user clicked the close button.
if (elementRectangles["windowClose"].Contains(e->Location))
{
windowElements["windowClose"] =
VisualStyleElement::Window::CloseButton::Pressed;
isClosing = true;
}
// The user clicked the status grip.
else if (elementRectangles["statusGripper"].Contains(e->Location))
{
isResizing = true;
this->Cursor = Cursors::SizeNWSE;
resizeOffset.X = this->Right - this->Left - e->X;
resizeOffset.Y = this->Bottom - this->Top - e->Y;
}
// The user clicked the window caption.
else if (elementRectangles["windowCaption"].Contains(e->Location))
{
isMoving = true;
originalClick.X = e->X;
originalClick.Y = e->Y;
}
Invalidate();
}
// Stop any current resizing or moving actions.
void ImitationWindow_MouseUp(Object^ sender, MouseEventArgs^ e)
{
// Stop moving the location of the window rectangles.
if (isMoving)
{
isMoving = false;
}
// Change the cursor back to the default if the user
// stops resizing.
else if (isResizing)
{
isResizing = false;
}
// Close the application if the user clicks the
// close button.
else if (elementRectangles["windowClose"].Contains(e->Location)
&& isClosing)
{
Application::Exit();
}
}
// Handle resizing or moving actions.
void ImitationWindow_MouseMove(Object^ sender,
MouseEventArgs^ e)
{
// The left mouse button is down.
if ((::MouseButtons::Left & e->Button) == ::MouseButtons::Left)
{
// Calculate the new control size if the user is
// dragging the resizing grip.
if (isResizing)
{
this->Width = e->X + resizeOffset.X;
this->Height = e->Y + resizeOffset.Y;
CalculateRectangles();
}
// Calculate the new location of the control if the
// user is dragging the window caption.
else if (isMoving)
{
int XChange = this->Location.X + (e->X - originalClick.X);
int YChange = this->Location.Y + (e->Y - originalClick.Y);
this->Location = Point(XChange, YChange);
}
// Cancel the closing action if the user clicked
// and held down on the close button, and has dragged
// the pointer outside the button.
else if (!elementRectangles["windowClose"].Contains(
e->Location) && isClosing)
{
isClosing = false;
windowElements["windowClose"] =
VisualStyleElement::Window::CloseButton::Normal;
}
}
// The left mouse button is not down.
else
{
// Paint the close button hot if the cursor is on it.
Rectangle^ closeRectangle =
elementRectangles["windowClose"];
if (closeRectangle->Contains(e->Location))
{
windowElements["windowClose"] =
VisualStyleElement::Window::CloseButton::Hot;
}
else
{
windowElements["windowClose"] =
VisualStyleElement::Window::CloseButton::Normal;
}
// Use a resizing cursor if the cursor is on the
// status grip.
Rectangle^ gripRectangle = elementRectangles["statusGripper"];
if (gripRectangle->Contains(e->Location))
{
this->Cursor = Cursors::SizeNWSE;
}
else
{
this->Cursor = Cursors::Default;
}
}
Invalidate();
}
// Calculate and set the clipping region for the control
// so that the corners of the title bar are rounded.
private:
void SetClipRegion()
{
if (!Application::RenderWithVisualStyles)
{
return;
}
Graphics^ g = this->CreateGraphics();
// Get the current region for the window caption.
if (SetRenderer(windowElements["windowCaption"]))
{
System::Drawing::Region^ clipRegion =
renderer->GetBackgroundRegion(g,
elementRectangles["windowCaption"]);
// Get the client rectangle, but exclude the region
// of the window caption.
int height = (int)clipRegion->GetBounds(g).Height;
System::Drawing::Rectangle nonCaptionRect = Rectangle(
ClientRectangle.X, ClientRectangle.Y + height,
ClientRectangle.Width, ClientRectangle.Height - height);
// Add the rectangle to the caption region, and
// make this region the form's clipping region.
clipRegion->Union(nonCaptionRect);
this->Region = clipRegion;
}
}
// Set the VisualStyleRenderer to a new element.
private:
bool SetRenderer(VisualStyleElement^ element)
{
if (!VisualStyleRenderer::IsElementDefined(element))
{
return false;
}
if (renderer == nullptr)
{
renderer = gcnew VisualStyleRenderer(element);
}
else
{
renderer->SetParameters(element);
}
return true;
}
};
public ref class Form1 : public Form
{
public:
Form1() : Form()
{
this->Size = System::Drawing::Size(800, 600);
this->Location = Point(20, 20);
this->BackColor = Color::DarkGray;
WindowSimulation^ ws = gcnew WindowSimulation();
Controls->Add(ws);
}
};
}
[STAThread]
int main()
{
Application::EnableVisualStyles();
Application::Run(gcnew VisualStyleRendererSample::Form1());
}
using System;
using System.Text;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Collections.Generic;
using System.Windows.Forms;
using System.Windows.Forms.VisualStyles;
namespace VisualStyleRendererSample
{
class Form1 : Form
{
public Form1()
: base()
{
this.Size = new Size(800, 600);
this.Location = new Point(20, 20);
this.BackColor = Color.DarkGray;
WindowSimulation Window1 = new WindowSimulation();
Controls.Add(Window1);
}
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.Run(new Form1());
}
}
public class WindowSimulation : Control
{
private Dictionary<string, VisualStyleElement> windowElements =
new Dictionary<string, VisualStyleElement>();
private Dictionary<string, Rectangle> elementRectangles =
new Dictionary<string, Rectangle>();
private VisualStyleRenderer renderer = null;
private Point closeButtonOffset;
private Size gripperSize;
private Size closeButtonSize;
private bool isResizing = false;
private bool isMoving = false;
private bool isClosing = false;
private int captionHeight;
private int frameThickness;
private int statusHeight = 22;
private Point originalClick = new Point();
private Point resizeOffset = new Point();
public WindowSimulation()
: base()
{
this.Location = new Point(50, 50);
this.Size = new Size(350, 300);
this.BackColor = Color.Azure;
this.DoubleBuffered = true;
this.MinimumSize = new Size(300, 200);
this.Font = SystemFonts.CaptionFont;
this.Text = "Simulated Window";
// Insert the VisualStyleElement objects into the Dictionary.
windowElements.Add("windowCaption",
VisualStyleElement.Window.Caption.Active);
windowElements.Add("windowBottom",
VisualStyleElement.Window.FrameBottom.Active);
windowElements.Add("windowLeft",
VisualStyleElement.Window.FrameLeft.Active);
windowElements.Add("windowRight",
VisualStyleElement.Window.FrameRight.Active);
windowElements.Add("windowClose",
VisualStyleElement.Window.CloseButton.Normal);
windowElements.Add("statusBar",
VisualStyleElement.Status.Bar.Normal);
windowElements.Add("statusGripper",
VisualStyleElement.Status.Gripper.Normal);
// Get the sizes and location offsets for the window parts
// as specified by the visual style, and then use this
// information to calcualate the rectangles for each part.
GetPartDetails();
CalculateRectangles();
this.MouseDown +=
new MouseEventHandler(ImitationWindow_MouseDown);
this.MouseUp +=
new MouseEventHandler(ImitationWindow_MouseUp);
this.MouseMove +=
new MouseEventHandler(ImitationWindow_MouseMove);
}
// Get the sizes and offsets for the window parts as specified
// by the visual style.
private void GetPartDetails()
{
// Do nothing further if visual styles are not enabled.
if (!Application.RenderWithVisualStyles)
{
return;
}
using (Graphics g = this.CreateGraphics())
{
// Get the size and offset of the close button.
if (SetRenderer(windowElements["windowClose"]))
{
closeButtonSize =
renderer.GetPartSize(g, ThemeSizeType.True);
closeButtonOffset =
renderer.GetPoint(PointProperty.Offset);
}
// Get the height of the window caption.
if (SetRenderer(windowElements["windowCaption"]))
{
captionHeight = renderer.GetPartSize(g,
ThemeSizeType.True).Height;
}
// Get the thickness of the left, bottom,
// and right window frame.
if (SetRenderer(windowElements["windowLeft"]))
{
frameThickness = renderer.GetPartSize(g,
ThemeSizeType.True).Width;
}
// Get the size of the resizing gripper.
if (SetRenderer(windowElements["statusGripper"]))
{
gripperSize = renderer.GetPartSize(g,
ThemeSizeType.True);
}
}
}
// Use the part metrics to determine the current size
// of the rectangles for all of the window parts.
private void CalculateRectangles()
{
int heightMinusFrame =
ClientRectangle.Height - frameThickness;
// Calculate the window frame rectangles and add them
// to the Dictionary of rectangles.
elementRectangles["windowCaption"] =
new Rectangle(0, 0,
ClientRectangle.Width, captionHeight);
elementRectangles["windowBottom"] =
new Rectangle(0, heightMinusFrame,
ClientRectangle.Width, frameThickness);
elementRectangles["windowLeft"] =
new Rectangle(0, captionHeight, frameThickness,
heightMinusFrame - captionHeight);
elementRectangles["windowRight"] =
new Rectangle(ClientRectangle.Width - frameThickness,
captionHeight, frameThickness,
heightMinusFrame - captionHeight);
// Calculate the window button rectangle and add it
// to the Dictionary of rectangles.
elementRectangles["windowClose"] =
new Rectangle(ClientRectangle.Right +
closeButtonOffset.X - closeButtonSize.Width - frameThickness, closeButtonOffset.Y,
closeButtonSize.Width, closeButtonSize.Height);
// Calculate the status bar rectangles and add them
// to the Dictionary of rectangles.
elementRectangles["statusBar"] =
new Rectangle(frameThickness,
heightMinusFrame - statusHeight,
ClientRectangle.Width - (2 * frameThickness),
statusHeight);
elementRectangles["statusGripper"] =
new Rectangle(ClientRectangle.Right -
gripperSize.Width - frameThickness,
heightMinusFrame - gripperSize.Height,
gripperSize.Width, gripperSize.Height);
}
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
// Ensure that visual styles are supported.
if (!Application.RenderWithVisualStyles)
{
this.Text = "Visual styles are not enabled.";
TextRenderer.DrawText(e.Graphics, this.Text,
this.Font, this.Location, this.ForeColor);
return;
}
// Set the clip region to define the curved corners
// of the caption.
SetClipRegion();
// Draw each part of the window.
foreach (KeyValuePair<string, VisualStyleElement> entry
in windowElements)
{
if (SetRenderer(entry.Value))
{
renderer.DrawBackground(e.Graphics,
elementRectangles[entry.Key]);
}
}
// Draw the caption text.
TextRenderer.DrawText(e.Graphics, this.Text, this.Font,
elementRectangles["windowCaption"], Color.White,
TextFormatFlags.VerticalCenter |
TextFormatFlags.HorizontalCenter);
}
// Initiate dragging, resizing, or closing the imitation window.
void ImitationWindow_MouseDown(object sender, MouseEventArgs e)
{
// The user clicked the close button.
if (elementRectangles["windowClose"].Contains(e.Location))
{
windowElements["windowClose"] =
VisualStyleElement.Window.CloseButton.Pressed;
isClosing = true;
}
// The user clicked the status grip.
else if (elementRectangles["statusGripper"].
Contains(e.Location))
{
isResizing = true;
this.Cursor = Cursors.SizeNWSE;
resizeOffset.X = this.Right - this.Left - e.X;
resizeOffset.Y = this.Bottom - this.Top - e.Y;
}
// The user clicked the window caption.
else if (elementRectangles["windowCaption"].
Contains(e.Location))
{
isMoving = true;
originalClick.X = e.X;
originalClick.Y = e.Y;
}
Invalidate();
}
// Stop any current resizing or moving actions.
void ImitationWindow_MouseUp(object sender, MouseEventArgs e)
{
// Stop moving the location of the window rectangles.
if (isMoving)
{
isMoving = false;
}
// Change the cursor back to the default if the user
// stops resizing.
else if (isResizing)
{
isResizing = false;
}
// Close the application if the user clicks the
// close button.
else if (elementRectangles["windowClose"].
Contains(e.Location) && isClosing)
{
Application.Exit();
}
}
// Handle resizing or moving actions.
void ImitationWindow_MouseMove(object sender,
MouseEventArgs e)
{
// The left mouse button is down.
if ((MouseButtons.Left & e.Button) == MouseButtons.Left)
{
// Calculate the new control size if the user is
// dragging the resizing grip.
if (isResizing)
{
this.Width = e.X + resizeOffset.X;
this.Height = e.Y + resizeOffset.Y;
CalculateRectangles();
}
// Calculate the new location of the control if the
// user is dragging the window caption.
else if (isMoving)
{
int XChange = this.Location.X +
(e.X - originalClick.X);
int YChange = this.Location.Y +
(e.Y - originalClick.Y);
this.Location = new Point(XChange, YChange);
}
// Cancel the closing action if the user clicked
// and held down on the close button, and has dragged
// the pointer outside the button.
else if (!elementRectangles["windowClose"].
Contains(e.Location) && isClosing)
{
isClosing = false;
windowElements["windowClose"] =
VisualStyleElement.Window.CloseButton.Normal;
}
}
// The left mouse button is not down.
else
{
// Paint the close button hot if the cursor is on it.
Rectangle closeRectangle =
elementRectangles["windowClose"];
windowElements["windowClose"] =
closeRectangle.Contains(e.Location) ?
VisualStyleElement.Window.CloseButton.Hot :
VisualStyleElement.Window.CloseButton.Normal;
// Use a resizing cursor if the cursor is on the
// status grip.
Rectangle gripRectangle =
elementRectangles["statusGripper"];
this.Cursor = gripRectangle.Contains(e.Location) ?
Cursors.SizeNWSE : Cursors.Default;
}
Invalidate();
}
// Calculate and set the clipping region for the control
// so that the corners of the title bar are rounded.
private void SetClipRegion()
{
if (!Application.RenderWithVisualStyles)
{
return;
}
using (Graphics g = this.CreateGraphics())
{
// Get the current region for the window caption.
if (SetRenderer(windowElements["windowCaption"]))
{
Region clipRegion = renderer.GetBackgroundRegion(
g, elementRectangles["windowCaption"]);
// Get the client rectangle, but exclude the region
// of the window caption.
int height = (int)clipRegion.GetBounds(g).Height;
Rectangle nonCaptionRect = new Rectangle(
ClientRectangle.X,
ClientRectangle.Y + height,
ClientRectangle.Width,
ClientRectangle.Height - height);
// Add the rectangle to the caption region, and
// make this region the form's clipping region.
clipRegion.Union(nonCaptionRect);
this.Region = clipRegion;
}
}
}
// Set the VisualStyleRenderer to a new element.
private bool SetRenderer(VisualStyleElement element)
{
if (!VisualStyleRenderer.IsElementDefined(element))
{
return false;
}
if (renderer == null)
{
renderer = new VisualStyleRenderer(element);
}
else
{
renderer.SetParameters(element);
}
return true;
}
}
}
Imports System.Text
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Collections.Generic
Imports System.Windows.Forms
Imports System.Windows.Forms.VisualStyles
Namespace VisualStyleRendererSample
Class Form1
Inherits Form
Public Sub New()
With Me
.Size = New Size(800, 600)
.Location = New Point(20, 20)
.BackColor = Color.DarkGray
End With
Dim Window1 As New ImitationWindow()
Controls.Add(Window1)
End Sub
<STAThread()> _
Shared Sub Main()
Application.EnableVisualStyles()
Application.Run(New Form1())
End Sub
End Class
Public Class ImitationWindow
Inherits Control
Private windowElements As _
New Dictionary(Of String, VisualStyleElement)
Private elementRectangles As _
New Dictionary(Of String, Rectangle)
Private renderer As VisualStyleRenderer = Nothing
Private closeButtonOffset As Point
Private gripperSize As Size
Private closeButtonSize As Size
Private isResizing As Boolean = False
Private isMoving As Boolean = False
Private isClosing As Boolean = False
Private captionHeight As Integer
Private frameThickness As Integer
Private statusHeight As Integer = 22
Private originalClick As New Point()
Private resizeOffset As New Point()
Public Sub New()
With Me
.Location = New Point(50, 50)
.Size = New Size(350, 300)
.BackColor = Color.Azure
.DoubleBuffered = True
.MinimumSize = New Size(300, 200)
.Font = SystemFonts.CaptionFont
.Text = "Imitation Window"
End With
' Create a collection of VisualStyleElement objects.
With windowElements
.Add("windowCaption", _
VisualStyleElement.Window.Caption.Active)
.Add("windowBottom", _
VisualStyleElement.Window.FrameBottom.Active)
.Add("windowLeft", _
VisualStyleElement.Window.FrameLeft.Active)
.Add("windowRight", _
VisualStyleElement.Window.FrameRight.Active)
.Add("windowClose", _
VisualStyleElement.Window.CloseButton.Normal)
.Add("statusBar", _
VisualStyleElement.Status.Bar.Normal)
.Add("statusGripper", _
VisualStyleElement.Status.Gripper.Normal)
End With
' Get the sizes and location offsets for the window parts
' as specified by the visual style, and then use this
' information to calcualate the rectangles for each part.
GetPartDetails()
CalculateRectangles()
End Sub
' Get the sizes and offsets for the window parts as specified
' by the visual style.
Private Sub GetPartDetails()
' Do nothing further if visual styles are not enabled.
If Not Application.RenderWithVisualStyles Then
Return
End If
Using g As Graphics = Me.CreateGraphics()
' Get the size and offset of the close button.
If SetRenderer(windowElements("windowClose")) Then
closeButtonSize = _
renderer.GetPartSize(g, ThemeSizeType.True)
closeButtonOffset = _
renderer.GetPoint(PointProperty.Offset)
End If
' Get the height of the window caption.
If SetRenderer(windowElements("windowCaption")) Then
captionHeight = renderer.GetPartSize(g, _
ThemeSizeType.True).Height
End If
' Get the thickness of the left, bottom, and right
' window frame.
If SetRenderer(windowElements("windowLeft")) Then
frameThickness = renderer.GetPartSize(g, _
ThemeSizeType.True).Width
End If
' Get the size of the resizing gripper.
If SetRenderer(windowElements("statusGripper")) Then
gripperSize = renderer.GetPartSize(g, _
ThemeSizeType.True)
End If
End Using
End Sub
' Use the part metrics to determine the current size of the
' rectangles for all of the window parts.
Private Sub CalculateRectangles()
Dim heightMinusFrame As Integer = _
ClientRectangle.Height - frameThickness
' Calculate the window frame rectangles and add them
' to the Dictionary of rectangles.
elementRectangles("windowCaption") = _
New Rectangle(0, 0, ClientRectangle.Width, _
captionHeight)
elementRectangles("windowBottom") = _
New Rectangle(0, heightMinusFrame, _
ClientRectangle.Width, frameThickness)
elementRectangles("windowLeft") = _
New Rectangle(0, captionHeight, frameThickness, _
heightMinusFrame - captionHeight)
elementRectangles("windowRight") = _
New Rectangle(ClientRectangle.Width - frameThickness, _
captionHeight, frameThickness, _
heightMinusFrame - captionHeight)
' Calculate the window button rectangle and add it
' to the Dictionary of rectangles.
elementRectangles("windowClose") = _
New Rectangle(ClientRectangle.Right + _
closeButtonOffset.X - closeButtonSize.Width - frameThickness, closeButtonOffset.Y, _
closeButtonSize.Width, closeButtonSize.Height)
' Calculate the status bar rectangles and add them
' to the Dictionary of rectangles.
elementRectangles("statusBar") = _
New Rectangle(frameThickness, _
heightMinusFrame - statusHeight, _
ClientRectangle.Width - 2 * frameThickness, _
statusHeight)
elementRectangles("statusGripper") = _
New Rectangle(ClientRectangle.Right - _
gripperSize.Width - frameThickness, _
heightMinusFrame - gripperSize.Height, _
gripperSize.Width, gripperSize.Height)
End Sub
Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
MyBase.OnPaint(e)
' Ensure that visual styles are supported.
If Not Application.RenderWithVisualStyles Then
Me.Text = "Visual styles are not enabled."
TextRenderer.DrawText(e.Graphics, Me.Text, Me.Font, _
Me.Location, Me.ForeColor)
Return
End If
' Set the clip region to define the curved corners of
' the caption.
SetClipRegion()
' Draw each part of the window.
Dim entry As KeyValuePair(Of String, VisualStyleElement)
For Each entry In windowElements
If SetRenderer(entry.Value) Then
renderer.DrawBackground(e.Graphics, _
elementRectangles(entry.Key))
End If
Next entry
' Draw the caption text.
TextRenderer.DrawText(e.Graphics, Me.Text, Me.Font, _
elementRectangles("windowCaption"), Color.White, _
TextFormatFlags.VerticalCenter Or _
TextFormatFlags.HorizontalCenter)
End Sub
' Initiate dragging, resizing, or closing the imitation window.
Private Sub ImitationWindow_MouseDown(ByVal sender As Object, _
ByVal e As MouseEventArgs) Handles Me.MouseDown
' The user clicked the close button.
If elementRectangles("windowClose"). _
Contains(e.Location) Then
windowElements("windowClose") = _
VisualStyleElement.Window.CloseButton.Pressed
isClosing = True
' The user clicked the status grip.
ElseIf elementRectangles("statusGripper"). _
Contains(e.Location) Then
isResizing = True
Me.Cursor = Cursors.SizeNWSE
resizeOffset.X = Me.Right - Me.Left - e.X
resizeOffset.Y = Me.Bottom - Me.Top - e.Y
' The user clicked the window caption.
ElseIf elementRectangles("windowCaption"). _
Contains(e.Location) Then
isMoving = True
originalClick.X = e.X
originalClick.Y = e.Y
End If
Invalidate()
End Sub
' Stop any current resizing or moving actions.
Private Sub ImitationWindow_MouseUp(ByVal sender As Object, _
ByVal e As MouseEventArgs) Handles Me.MouseUp
' Stop moving the location of the window rectangles.
If isMoving Then
isMoving = False
' Change the cursor back to the default if the
' user stops resizing.
ElseIf isResizing Then
isResizing = False
' Close the application if the user clicks the
' close button.
ElseIf elementRectangles("windowClose"). _
Contains(e.Location) And isClosing Then
Application.Exit()
End If
End Sub
' Handle resizing or moving actions.
Private Sub ImitationWindow_MouseMove(ByVal sender As Object, _
ByVal e As MouseEventArgs) Handles Me.MouseMove
' The left mouse button is down.
If (MouseButtons.Left And e.Button) = _
MouseButtons.Left Then
' Calculate the new control size if the user is
' dragging the resizing grip.
If isResizing Then
Me.Width = e.X + resizeOffset.X
Me.Height = e.Y + resizeOffset.Y
CalculateRectangles()
' Calculate the new location of the control if
' the user is dragging the window caption.
ElseIf isMoving Then
Dim XChange As Integer = Me.Location.X + _
(e.X - originalClick.X)
Dim YChange As Integer = Me.Location.Y + _
(e.Y - originalClick.Y)
Me.Location = New Point(XChange, YChange)
' Cancel the closing action if the user clicked and
' held down on the close button, and has dragged the
' pointer outside the button.
ElseIf Not elementRectangles("windowClose"). _
Contains(e.Location) And isClosing Then
isClosing = False
windowElements("windowClose") = _
VisualStyleElement.Window.CloseButton.Normal
End If
' The left mouse button is not down.
Else
' Paint the close button hot if the cursor is on it.
If elementRectangles("windowClose"). _
Contains(e.Location) Then
windowElements("windowClose") = _
VisualStyleElement.Window.CloseButton.Hot
Else
windowElements("windowClose") = _
VisualStyleElement.Window.CloseButton.Normal
End If
' Use a resizing cursor if the cursor is on the
' status grip.
If elementRectangles("statusGripper"). _
Contains(e.Location) Then
Me.Cursor = Cursors.SizeNWSE
Else
Me.Cursor = Cursors.Default
End If
End If
Invalidate()
End Sub
' Calculate and set the clipping region for the control
' so that the corners of the title bar are rounded.
Private Sub SetClipRegion()
If Not Application.RenderWithVisualStyles Then
Return
End If
Using g As Graphics = Me.CreateGraphics()
' Get the current region for the window caption.
If SetRenderer(windowElements("windowCaption")) Then
Dim clipRegion As Region = _
renderer.GetBackgroundRegion(g, _
elementRectangles("windowCaption"))
' Get the client rectangle, but exclude the
' region of the window caption.
Dim height As Integer = _
CInt(clipRegion.GetBounds(g).Height)
Dim nonCaptionRect As _
New Rectangle(ClientRectangle.X, _
ClientRectangle.Y + height, _
ClientRectangle.Width, _
ClientRectangle.Height - height)
' Add the rectangle to the caption region, and
' make this region the form's clipping region.
clipRegion.Union(nonCaptionRect)
Me.Region = clipRegion
End If
End Using
End Sub
' Set the VisualStyleRenderer to a new element.
Private Function SetRenderer(ByVal element As _
VisualStyleElement) As Boolean
If Not VisualStyleRenderer.IsElementDefined(element) Then
Return False
End If
If renderer Is Nothing Then
renderer = New VisualStyleRenderer(element)
Else
renderer.SetParameters(element)
End If
Return True
End Function
End Class
End Namespace
설명
System.Windows.Forms.VisualStyles 네임스페이스는 VisualStyleElement 비주얼 스타일에서 지원하는 모든 컨트롤 및 UI(사용자 인터페이스) 요소를 나타내는 개체를 노출합니다. 특정 요소에 대한 정보를 그리거나 얻으려면 관심 있는 요소로 VisualStyleRenderer 설정해야 합니다. A VisualStyleRenderer 는 생성자에 지정된 VisualStyleElement VisualStyleRenderer 것으로 자동으로 설정되지만 메서드를 호출 SetParameters 하여 기존 VisualStyleRenderer 요소를 다른 요소로 설정할 수도 있습니다.
요소를 그리려면 메서드를 DrawBackground 사용합니다. 클래스에는 VisualStyleRenderer 현재 비주얼 스타일에서 요소를 정의하는 방법에 대한 정보를 제공하는 메서드(예: GetColor 및 GetEnumValue)도 포함됩니다.
VisualStyleRenderer 생성자와 많은 VisualStyleRenderer 메서드는 운영 체제에서 비주얼 스타일을 사용 하 고 애플리케이션 창의 클라이언트 영역에 비주얼 스타일을 적용 하지 않으면 예외를 throw 합니다. 이러한 조건을 확인하려면 속성을 사용합니다 static IsSupported .
클래스는 VisualStyleRenderer Windows 플랫폼 SDK Windows 셸 부분에서 비주얼 스타일(UxTheme) API의 기능을 래핑합니다.
생성자
| VisualStyleRenderer(String, Int32, Int32) |
지정된 클래스, 파트 및 상태 값을 사용하여 VisualStyleRenderer 클래스의 새 인스턴스를 초기화합니다. |
| VisualStyleRenderer(VisualStyleElement) |
지정된 VisualStyleRenderer을 사용하여 VisualStyleElement 클래스의 새 인스턴스를 초기화합니다. |
속성
| Class |
현재 비주얼 스타일 요소의 클래스 이름을 가져옵니다. |
| Handle |
비주얼 스타일 요소의 현재 클래스에 대한 고유 식별자를 가져옵니다. |
| IsSupported |
운영 체제에서 컨트롤을 그리기 위해 비주얼 스타일을 사용하는지 여부를 지정하는 값을 가져옵니다. |
| LastHResult |
VisualStyleRenderer 클래스로 캡슐화된 네이티브 비주얼 스타일(UxTheme) API 메서드에서 반환한 마지막 오류 코드를 가져옵니다. |
| Part |
현재 비주얼 스타일 요소의 파트를 가져옵니다. |
| State |
현재 비주얼 스타일 요소의 상태를 가져옵니다. |